Vyznev:
This was my first geohash ever. I just happened to look at the geohashing wiki before leaving work, and saw that the hashpoint was on a street corner in central Helsinki, only a short bus ride away. I don't have a GPS, so I just looked up the location on Google Maps and Street View and memorized it.

After looking at the bus routes on the route planner, I also realized that I hadn't crossed my own path while coming to work, so I could attempt the Tron achievement. (As I understand it, stopping in a building and crossing my path while inside doesn't count.) I'd already walked right past the nearest bus stop, though, so I had to make a small detour through the woods to another stop.

Finding the actual hashpoint wasn't particularly difficult, even from memory. I looked for signs of any earlier visitors (didn't spot any), wrote "XKCD" in the snow and took some pictures. Didn't remember to make a snowman, though. On the way back, I took a tram to the city center, stopped to buy some groceries and took another bus home. For a final twist, I dozed off in the bus and ended up missing my stop. I wasn't sure if taking another bus back along the same road would be enough to disqualify me from the Tron achievement, so I decided to walk home along some small footpaths instead, which would've been quite pleasant if I hadn't been carrying a ridiculously heavy bag of groceries with me.

I was hoping to get the Frozen Geohash achievement too, but I didn't have a thermometer with me, and the temperature recorded at the closest weather station at the time I visited the hashpoint was just around 0 °C, so I can't really be sure.